Which organ system does not excrete waste?
The cardiovascular system
The respiratory system
The digestive system
The integumentary system
The urinary system
Correct Answer : A
A. The cardiovascular system is primarily involved in transporting blood and nutrients but does not directly excrete waste.
B. The respiratory system: The respiratory system helps excrete carbon dioxide, a waste product of metabolism.
C. The digestive system excretes waste through the process of defecation.
D. The integumentary system (skin) excretes waste through sweat.
E. The urinary system is directly involved in the excretion of waste products through urine.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The liver is indeed the largest gland in the human body, weighing about 1.5 kilograms in an average adult. It performs numerous vital functions, including detoxification, protein synthesis, and the production of biochemicals necessary for digestion (e.g., bile).
Correct Answer is D
Explanation
A. Penetrate the vagina: The acrosome does not play a role in penetrating the vagina. Its function is specifically related to the sperm's ability to penetrate the ovum, making this option incorrect.
B. Dissolve the stickiness of the semen: While enzymes do play a role in semen liquefaction, this is not the function of the acrosome. The acrosome is primarily involved in the process of fertilization, not semen modification.
C. Dissolve the mucosa of the uterus: The acrosome is not involved in dissolving the mucosa of the uterus. Its function is related to penetrating the barriers surrounding the ovum.
D. Penetrate barriers surrounding the ovum: The acrosome contains enzymes that break down the outer layers of the ovum (such as the zona pellucida), allowing the sperm to penetrate and fertilize the egg. This is the correct answer.
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